Third installment of Great Green Places Washington, D.C.'s Office of Planning's Harriet Tregoning takes us on a tour of Washington, D.C.'s Columbia Heights neighborhood.

Everyone can name great public places, such as parks, squares, and outdoor markets found in cities across the country. But what makes these places work? Why do people seek them out and congregate there in large groups? And what makes some of public spaces “greener?" In an effort to provide a “decoder ring” to reveal what makes these places so successful, the National Building Museum presents a series of mini-documentaries that identify the specific elements that help make Great Green Places.

Great Green Places is made possible by grants from the U.S. Institute of Museum and Library Services and the Government of the District of Columbia, Office of the Deputy Mayor for Planning and Economic Development.